Algernon Borthwick, 1st Baron Glenesk

After his father's death in 1852, he became managing editor and within seven years had paid off the newspaper's financial debt to paper manufacturers Thomas Bonsor Crompton.

[5] In the mid-1880s, Borthwick played a role in popularizing the Primrose League, an organisation dedicated to spreading Conservative principles in the UK.

[7] Borthwick's political career increased the influence on the Morning Post and the newspaper soon became "one of the great organs of opinion on the Conservative side.

Oliver Borthwick (1873–1905), held a managing role in the Morning Post until his own death, predeceasing his father, in 1905 aged just thirty two.

When Algernon Borthwick himself died in 1908, proprietorship of the Morning Post passed his only surviving child, the Hon.

The mausoleum had been designed and built for Glenesk by Arthur Blomfield in 1899, and also held the remains of his wife, and his son, Oliver.