This is Family Line Reference [P6], details known are ......

Peter Lang Mutch born 1817 christened 14 September 1817 in the parish of Nigg, Kincardine

Parent:

His father was James Mutch [J11]

Relationships:
Spouse Ann McBeath born 1 October 1819 in the parish of Birnie, Moray christened 26 October 1819 in the parish of Birnie, Moray - died 15 February 1871 at 78 West North Street in the parish of St Nicolas, Aberdeen. They married 31 December 1842 in the parish of St Nicholas, Aberdeen.
Children were:
  1. Ann born 1843 in the parish of St Nicholas, Aberdeen - died 4 May 1858 in the parish of St Nicholas, Aberdeen
  2. Jane born 1846 in the parish of Old Machar
  3. Mary born 1848 in the parish of St Nicholas, Aberdeen - died September 1864 in the parish of St Nicholas, Aberdeen
  4. Isabella born 1850 in the parish of St Nicholas, Aberdeen - died 23 November 1873 in the parish of St Nicholas, Aberdeen
  5. Peter born 7 December 1852 in the parish of St Nicholas, Aberdeen christened 21 January 1853 in the parish of St Mary's with St Peter's, Aberdeen - died 3 November 1856 in the parish of St Nicholas, Aberdeen
  6. Eliza born 4 March 1855 in the parish of St Nicholas, Aberdeen christened 29 March 1855 in the parish of St Mary's with St Peter's, Aberdeen
Last updated: Wednesday, 14th April 2021

Webmaster's notes:

Nancy Loe provided the information that James + Esther Nicol [J11] were Peter's parents. She also gave details of the additional three children which do not appear in IGI. See under J11 for full details.
I found details of Peter and Elizabeth's (Eliza) birth and christening in the Catholic Parish Records on the GRO website. The parish names here are different from the Church of Scotland ones.
Nancy Loe has since found another daughter, Ann, from this family
Nancy has also sent updated details of daughter Isabella which you can see here. She wrote:

I have an update on Isabella Mutch, dau of Peter Lang and Ann McBeath Mutch attached. Given the cause of death, I'd say this might be a case of seduced and abandoned. Never married.