At the general election in 1734, he was returned as one of the sixteen representative peers of Scotland.

Montgomerie was elected as one of sixteen Scottish representative peers, in 1776.

The Government, however, responded that the Articles did envisage a change in the election of representative peers.

Ireland had, from 1801, the right to send twenty-eight representative peers to the House of Lords.

He suggested that there was no basis for calling representative peers who had already been elected to Parliament.

From 1707 to 1963 they were represented in the British House of Lords by only representative peers.

In contrast Irish representative peers sat for life.

After 1707, Scotland's representative peers were elected here to be sent to Westminster.

Instead they were allowed to elect representative peers to each parliament.

He was appointed one of 18 Scottish representative peers in 1707.