Señora Mosquera uses the arms of her husband, Jose Manuel Mosquera Castelo, in an oval. In a typical Spanish style, the shield is divided per pale with the dexter side representing the Mosquera line; two wolves’ heads on a white field. The original Mosquera arms are listed in the Armorial Europe Reitstap as "Argent, five wolves’ heads Sable, langued Gules, 2,1 and 2.".

The sinister side represents the Castelo line; on a red field a castle (argent) upon a green mound (base). Almost all Castelo arms feature a castle (there are nine entries in Reitstap). The red field with a green base (mound) is not considered to be a violation of the so-called tincture rules because it is a division of the field.

Spanish heraldry style and practice follows the Iberian branch of the Latin heraldry tradition and charges shown on Spanish armorial bearings can depict historical events or deeds of war. Iberian heraldry also allows words and letters on the shield itself, a practice which is considered incorrect in northern Europe.

The bordure (border) is divided per pale, red and blue, and has upon it the date 1845 commemorating the election of Tomás Cipriano de Mosquera, the armiger’s great grandfather, to the Presidency of The Republic of New Grenada. The date is set between two coronets of a Captain General (Tomás Cipriano de Mosquera held the rank of Grand General) along with the golden cups representing other family members. The coronets are those allowed to a Captain General, the highest-ranking Spanish military coronet (Introducción a la heráldica y manual de heráldica militar española. Madrid: Ministerio de Defensa, 2010).

The Crest is a black cockapoo, the armiger’s beloved pet dog and it is illustrated here as a companion to the arms.