The Alexander Mc Lauchlin Family of Canada

The Mc Lauchlin family originated in Scotland. Alexander Mc Lauchlin was born in 1818.He married Edna Pearson and they had (13) children; Joseph (1853)William E.(1846) Susan C.(1849) Flora J.(1849) Alma E.(1856)Bayard T.(1858 Alex E.(1859) Ada (1861) Alice Cary (1864) Cora B.(1864) Edger(1867) Adam A.(1869) George (1871).
The family arrived originally in the United States and then settled in eastern Canada. Relatives later moved to western Canada and the family tree grew. I am trying to trace the path and further relatives that may exist.
On my mother's parents side, I am also looking for information on Venzal Mis and Anna Pincova originally from Czeck.