 Complete the following phrase:  Othos ashes were placed within a modest monument. He had reigned three months. His funeral was celebrated at once as he had wished. A plain tomb was erected in his honour at Brixellum, with the inscription Diis Manibus Marci Othonis. His 91-day reign would be the shortest until that of Pertinax, whose reign lasted 87 days in 193 during the 