Albert married first, to Dorothea (1 August 1504 – 11 April 1547), daughter of King Frederick I of Denmark, in 1526.
They had six children:
Anna Sophia (11 June 1527 – 6 February 1591), married John Albert I, Duke of Mecklenburg-Güstrow.

Katharina (b. and d. 24 February 1528).

Frederick Albert (5 December 1529 – 1 January 1530).

Lucia Dorothea (8 April 1531 – 1 February 1532).

Lucia (3 February 1537 – May 1539).

Albert (b. and d. March 1539).

He married secondly to Anna Maria (1532–20 March 1568), daughter of Eric I, Duke of Brunswick-Lüneburg, in 1550.
The couple had two children:
Elisabeth (20 May 1551 – 19 February 1596).

Albert Frederick (29 April 1553 – 18 August 1618), Duke of Prussia.
Albert married first, to Dorothea (1 August 1504 – 11 April 1547), daughter of King Frederick I of Denmark, in 1526. They had six children:
Anna Sophia (11 June 1527 – 6 February 1591), married John Albert I, Duke of Mecklenburg-Güstrow.
Katharina (b. and d. 24 February 1528).
Frederick Albert (5 December 1529 – 1 January 1530).
Lucia Dorothea (8 April 1531 – 1 February 1532).
Lucia (3 February 1537 – May 1539).
Albert (b. and d. March 1539).
He married secondly to Anna Maria (1532–20 March 1568), daughter of Eric I, Duke of Brunswick-Lüneburg, in 1550. The couple had two children:
Elisabeth (20 May 1551 – 19 February 1596).
Albert Frederick (29 April 1553 – 18 August 1618), Duke of Prussia.
Albert, Duke of Prussia