Hi, im the grand daughter of William mailer that owned Lochie farm near Auchterarder. My father is the eldest of three of his sons. Williams wife is still alive as is his sister whos married name is Powrie. She lives in Australia now and is now a widow to the famous fiddler Ian Powrie who passed away a few years ago. There are a few unrelated 'Mailer's' within Auchterarder and surrounding area. My relatives also are in Dunning St Serf cemetery. As i am aware, my Mailer family are also related to Nicols and Drummonds. The name Mailer is derived from long ago when people ended up with names due to their profession. Eg Mailer -- postman and chain mail maker (armour).
If you need any more info, just get in touch.