Family of n members described by clues: who is the mother or father of X

This type of question, asked 2 times: 25 Sep 2024 S1, 18 Sep 2025 S2. All 2 questions below, oldest first.

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Question 1
25 Sep 2024 S1
11 $All the six members of a family, 1, 2, 3, 4, 5 and 6, live together. 2 is the daughter of 3, but 3 is not the mother of 2. 1 and 3 are a married couple. 5 is the sister of 3. 4 is the daughter of 1. 6 is the brother of 2. Who is the mother of 2?$
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Question 2
18 Sep 2025 S2
10 $In a family, there are 6 members P, Q, R, S, T and U. - P and Q are a married couple - R is the son of P - T is the sister of R - Q is the mother of S U is the brother of P. Who is the father of S?$
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Question 1