There are 3 Muir-Martin marriages in my full database as well as one Muir-Hillier.
Andrew Muir
b. 10 September 1801, d. 26 August 1874
Elizabeth Trail
b. 1800, m. circa 1819, d. 22 September 1883
Robert Muir
b. 20 June 1821, d. 1 August 1904
Mary White
b. 10 March 1829, m. 10 March 1853, d. 18 July 1915
Bridget Muir
b. 31 March 1865, d. 3 October 1961
John Wellstead
b. 6 January 1854, m. 4 September 1884, d. 28 December 1922
Andrew Wellstead MM
b. 14 March 1897, d. 6 October 1963
Delcie E. H. Harris
b. 27 November 1902, m. 19 January 1925, d. 6 January 1937
Lance A. Wellstead
b. 3 February 1929, d. 5 November 1999
Agnes F. Muir
b. 15 January 1825, d. 8 June 1902
Samuel Piggott
b. 17 January 1819, m. 7 April 1847, d. 6 May 1884
Andrew M. Piggott
b. 28 July 1855, d. 9 December 1937
Mary A. W. Brown
b. 27 August 1872, m. 18 January 1890, d. 8 June 1947
Eric J. Piggott
b. 23 July 1914, d. 14 August 1997
Kathleen A. Dixon
b. 26 December 1925, m. 1956, d. 29 May 1998
Mary A. Piggott
b. 7 March 1858, d. 10 February 1933
William H. Hayward
b. circa 1833, m. 15 February 1881, d. 10 April 1918
Mary Hayward
b. 1886, d. 21 July 1969
Ralph W. Brockman
b. 20 January 1883, m. 13 September 1905, d. 4 October 1917
Mervyn F. Brockman
b. 27 June 1915, d. 11 September 1996
Isobel V. Leitch
b. 23 June 1919, m. 16 April 1942, d. 13 February 2013
Margaret Muir
b. 20 December 1828, d. 5 May 1885
David Young
b. 25 November 1825, m. 1851, d. 28 September 1908
Agnes C. Young
b. 8 June 1862, d. 8 November 1947
William P. Wray
b. 19 May 1860, m. 1889, d. 25 March 1932
David J. Wray
b. 1 March 1897, d. 5 August 1985
Sadie E. Cockram
b. 1904, m. 1928, d. 30 June 1997
Subject
Daughter
Son
Spouse
Martin Descendant