Hi Helen
Have you got the records from Scotlands People ?
18/07/1797   FILSHY   AGNES   JOHN FILSHY/JANET LANG FR527 (FR527)   F   OLD OR WEST KILPATRICK   
18/07/1797   FILSHY   ANN   JOHN FILSHY/JANET LANG FR527 (FR527)   F   OLD OR WEST KILPATRICK   
2/02/1795   FILSHY   JANET   JOHN FILSHY/JANET LANG FR516 (FR516)   F   OLD OR WEST KILPATRICK
05/01/1800   FILSHY   JOHN   JOHN FILSHY/JANET LANG FR541 (FR541)   M   OLD OR WEST KILPATRICK
There is also a James and Christian Walker
24/10/1800   FILSHY   JAMES   JAMES FILSHY/CHRISTIAN WALKER FR544 (FR544)   M   OLD OR WEST KILPATRICK