Maryland: Governors: 1634-1689

Governor
25 Mar/4 Apr 1634 - 9 (or 10) / 10 (or 20) Jun 1647	Leonard Calvert
10/20 Jun 1647 - Apr/May 1649	Thomas Greene [1]
Apr/May 1649 - 29 Mar/8 Apr 1652	William Stone [2]
Council of Maryland [3]
29 Mar/8 Apr 1652 - 28 Jun/8 Jul 1652
Governor
28 Jun/8 Jul 1652 - 22 Jul/1 Aug 1654	William Stone
Commissioners [4]
22 Jul/1 Aug 1654 - 24 Mar/3 Apr 1658
Governor
24 Mar/3 Apr 1658 - Oct/Nov 1660	Josias Fendall
Oct/Nov 1660 - Nov/Dec 1661	Philip Calvert [5]
Nov/Dec 1661 - 4/14 Mar 1676	Charles Calvert [6]
Lord and Proprietary of the Province of Maryland
4/14 Mar 1676 - Jun/Jul 1676	Charles Calvert, Baron Baltimore
Governor
Jun/Jul 1676 - Jan 1679	Cecil Calvert [7]
Lord and Proprietary of the Province of Maryland
Jan 1679 - May/Jun 1684	Charles Calvert, Baron Baltimore [8]
Governor
May/Jun 1684 - 1/11 Aug 1689	Benedict Leonard Calvert [9]

Green was said to have been named governor by Leonard Calvert, lying on his deathbed on 9/20 Jun 1647. In the absence of the written will, the Council accepted the evidence of an eyewitness and executrix of Calvert and proclaimed Greene on 10/20 Jun 1647.
Stone's commission was issued on 6/16 Aug 1648 in England. The date of his assumption of office is unknown, but the first exatant document which he signed is dated 26 Apr 1649 (Old Style).
The commission of Governor was declared "void and null" and the government was entrusted to the Council of Maryland by a proclamation of the Commissioners of the Council of State of the Commonwealth of England issued on 29 Mar/8 Apr 1652. The Commissioners restored Stone on 28 Jun/8 Jul 1652.
The Commissioners, appointed by Lord Protector Oliver Cromwell for "Reduceing and Settling" of Maryland and Virginia, appointed a group of Maryland commissioners to govern the colony on 22 Jul/1 Aug 1654 who served until the surrender of administration to Fendall, holding a commission from the Proprietary.
Philip Calvert's commission was issued on 24 Jun/4 Jul 1660 in England. The date of his assumption of office is unknown, but the first exatant document which he signed is dated 31 Oct 1660 (Old Style).
Charles Calvert's commission was issued on 14/24 Sep 1661 in England. The date of his assumption of office is unknown, but the first Council in his presence was held on 28 Nov/8 Dec 1661. He inherited the title of baron and succeeded to the proprietorship of Maryland after the death of his father, Cecil Calvert, in England on 30 Nov/10 Dec 1675. The formal proclamation of Charles in Maryland took place on 4/14 Mar 1676. After attending a meeting of the Council on 19/29 Jun 1676, he departed for England sometime before 6/16 Jul 1676.
Cecil Calvert was a minor when he was appointed governor by his father, Charles Baron Baltimore, on 16/26 Jun 1676.

Deputy Governor

Jun/Jul 1676 - Jul/Aug 1676

Jesse Wharton

Wharton died between 27 Jul/6 Aug 1676 and 1/11 Aug 1676.

1/11 Aug 1676 - Jan 1679

Thomas Notley

Notley was named his successor by the will of Wharton read in Council on 1/11 Aug 1676 when Notley took the oaths.
Charles returned to Maryland attending his first Council on 8/18 Jan 1679. He ruled the colony until his return to England (last known document is dated 24 May 1684 Old Style).
Benedict Calvert was a minor when he was appointed governor by his father, Charles Baron Baltimore, on 1/11 May 1684.

Deputies

May/Jun 1684 - 3/13 Oct 1688

George Talbott, Thomas Taillor, Vincent Lowe, Henry Darnall, William Digges, William Stevens, William Burges, Nicholas Sewall, John Darnall

The Proprietary appointed nine person to serve as "Deputies and Commission."

President

3/13 Oct 1688 - 1/11 Aug 1689

William Joseph

Joseph was appointed by the Proprietary to preside in Council and Provincal Court and took the oaths on 3/13 Oct 1688.